ICC P3 flashcards

32 cards. Read the term and the definition here. The deck at the top of this page is optional.

Plan review submission

Plumbing permit drawings must be drawn to scale and show floor plans, riser or isometric diagrams, fixture locations and types, pipe sizes and materials, and the building occupancy classification.

Permit expiration

A plumbing permit lapses where work has not commenced within 180 days of issuance, or where work is suspended or abandoned for 180 days, unless an extension is granted.

Work exempt from permit

Clearing stoppages, repairing leaks in drains, water, soil, waste, or vent pipe, and reinstalling an existing water closet without disturbing the trap do not require a plumbing permit.

Certificate of occupancy

Issued only after the final plumbing inspection is approved; the code official may require water, air, or smoke tests and rough-in inspections before sign-off.

Alternate materials approval

Materials, methods, or designs not specifically listed in the code may be used only when the code official approves them in writing based on evidence of equivalent performance.

Water closet flush volume

The maximum flush is 1.6 gallons for a water closet, and 1.28-gpf water closets also comply; urinals are limited to 1.0 gallon per flush.

Trap seal depth

The water seal of a fixture trap must be not less than 2 inches and not more than 4 inches deep, measured at the trap weir.

Trap arm length limits

Maximum developed length from trap weir to vent is 5 feet for 1-1/4 inch, 6 feet for 1-1/2 inch, 8 feet for 2 inch, 12 feet for 3 inch, and 16 feet for 4 inch pipe.

Bathroom group fixture units

A private bathroom group of water closet, lavatory, and bathtub or shower equals 5 drainage fixture units with a flush tank and 6 with a flushometer valve.

Accessible lavatory height

An accessible lavatory has a rim no higher than 34 inches above the finished floor, with knee and toe clearance and insulated hot water and drain piping.

Trap primer requirement

Traps subject to evaporation, such as floor drains in infrequently used areas, must be protected by a trap primer or another approved means of maintaining the seal.

T&P relief valve discharge

The discharge pipe must be the full size of the valve outlet, gravity-drained, with no valves or traps, terminating not more than 6 inches above the floor or outside the building.

Water heater drain pan

A pan at least 1-1/2 inches deep with a drain of at least 3/4 inch is required where a tank leak would damage the structure, finish, or the ceiling below.

Garage water heater elevation

In private garages, a water heater whose ignition source is within 18 inches of the floor must be elevated so the ignition source is at least 18 inches above the floor.

Thermal expansion tank

Required where a check valve, backflow preventer, or pressure-reducing valve creates a closed system and expanding water cannot flow back into the supply main.

Seismic water heater strapping

Two straps are required where seismic design category C or greater applies, with one strap in the lower third and one in the upper third of the tank.

Minimum water service size

The building water service is not smaller than 3/4 inch, and no individual fixture supply is smaller than 3/8 inch except where the code permits otherwise.

Pressure reducing valve threshold

Where static water pressure exceeds 80 psi, a pressure-reducing valve must be installed and is typically set to deliver 50 to 60 psi downstream.

Flushometer water closet supply

A flushometer-valve water closet requires a minimum 1-inch fixture supply, while a flush-tank water closet requires only a 3/8-inch supply.

Hydrostatic test

Water distribution piping must be tested and proved tight under pressure at or above the working pressure, and the test must be approved before the piping is concealed.

Water and sewer separation

Where water service pipe crosses a building sewer, the water pipe must be laid at least 12 inches above the sewer, with additional separation required in the same trench.

Air gap backflow protection

An air gap provides complete backflow protection; hose bibbs and sill cocks also require an approved vacuum breaker or other listed backflow prevention device.

Drain slope by pipe size

Pipes 2-1/2 inches and smaller slope at 1/4 inch per foot; 3-inch and larger horizontal drains slope at 1/8 inch per foot, with 1/4 inch also permitted.

Building sewer minimum size

The building sewer must be at least 4 inches in diameter and is sized from the total drainage fixture units it serves using the building drain and sewer table.

Cleanout locations

Cleanouts are required at the base of each stack, at the upper end of each horizontal drain, at horizontal changes exceeding 45 degrees, and at intervals not over 100 feet.

Vent termination height

A vent stack extended through the roof must terminate at least 6 inches above the roof surface and must not end under an overhang or near an air intake.

Secondary roof drainage

Overflow drains or scuppers are required in addition to primary roof drains where a parapet wall or similar condition could allow water to pond if the primary drain blocks.

Backwater valve

Fixtures that drain to a point below the level of the next upstream manhole on the sewer must be protected by an automatically closing backwater valve.

Gas piping test pressure

Fuel gas piping is tested at not less than 1-1/2 times the maximum working pressure and never less than 3 psi, held for a minimum of 10 minutes.

Sediment trap

A drip leg or sediment trap is required at the inlet of each gas appliance, downstream of the shutoff valve, unless the appliance has an integral sediment trap.

Combustion air openings

Two permanent openings are required, sized at 1 square inch per 1,000 Btu/hr for indoor air, 1 per 2,000 for horizontal outdoor ducts, and 1 per 4,000 for vertical ducts.

Grease interceptor

Food-service sinks discharge through a grease interceptor sized to the fixture flow and grease retention capacity, with a vented, accessible cover and a solids-retaining compartment.